Map
General Information
| Postal Area | Gwynedd |
| Postcode | LL77 7HL |
| User Type | Small (less than 25 items of mail per day) |
| Region | — |
| Country | Wales |
| Local authority | Isle of Anglesey |
| Introduction Date | 1980-01-01 |
| Termination Date | 2016-08-01 |
Geographic Information
| Latitude | 53.2551860 |
| Longitude | -4.3048010 |
| Easting | 246342 |
| Northing | 375610 |
| Quality | Within the building of the matched address closest to the postcode mean |